public class TestDemo_minStack {

    public static void main(String[] args) {

        MinStack minStack = new MinStack();
        minStack.push(512);
        minStack.push(-1024);
        minStack.push(-1024);
        minStack.push(512);
        minStack.pop();
        minStack.getMin();
        minStack.pop();
        minStack.getMin();
        minStack.pop();
        minStack.getMin();

    }
}
